/*  mbed Microcontroller Library
    Copyright (c) 2006-2013 ARM Limited

    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
    You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

    Unless required by applicable law or agreed to in writing, software
    distributed under the License is distributed on an "AS IS" BASIS,
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
*/
#include "FileBase.h"

namespace mbed {

    FileBase* FileBase::_head = NULL;

    FileBase::FileBase(const char* name, PathType t) : _next(NULL),
        _name(name),
        _path_type(t) {
        if (name != NULL) {
            // put this object at head of the list
            _next = _head;
            _head = this;
        } else {
            _next = NULL;
        }
    }

    FileBase::~FileBase() {
        if (_name != NULL) {
            // remove this object from the list
            if (_head == this) { // first in the list, so just drop me
                _head = _next;
            } else {             // find the object before me, then drop me
                FileBase* p = _head;
                while (p->_next != this) {
                    p = p->_next;
                }
                p->_next = _next;
            }
        }
    }

    FileBase* FileBase::lookup(const char* name, unsigned int len) {
        FileBase* p = _head;
        while (p != NULL) {
            /* Check that p->_name matches name and is the correct length */
            if (p->_name != NULL && std::strncmp(p->_name, name, len) == 0 && std::strlen(p->_name) == len) {
                return p;
            }
            p = p->_next;
        }
        return NULL;
    }

    FileBase* FileBase::get(int n) {
        FileBase* p = _head;
        int m = 0;
        while (p != NULL) {
            if (m == n) {
                return p;
            }

            m++;
            p = p->_next;
        }
        return NULL;
    }

    const char* FileBase::getName(void) {
        return _name;
    }

    PathType FileBase::getPathType(void) {
        return _path_type;
    }

} // namespace mbed

